Door-check



` PATENTBD PEB. 1e, 19o-4.

R. R. SMITH.

DOOR CHECK.

PPLIUATION FILED 0012.29. 190s.

2 SHEETS-SHEET l.

(IrlgllIIlI/Illlll PATENTED FEB. 16, 1904. R. R. SMITH.

DOOR CHECK.

APPLIGATION FILED 00T. 29. 1903.

2 SHEETS-SHEET 2.

N0 MODEL.

lli lili-lill Flinnnannnirnnnfnnmrnmi UNITED STATES] u vices for retaining ,PATENT OFFICE.

EoEER'r E. sMI'rH, or PHILADELPHIA, PENNSYLVANIA.

SPECIFICATION forming part ofl Letters Patent No. 752,117, dated February 16, 1904.

Appnman nea omar 29,1903. serial Nofriaol. (No man.)

To a/ZZ whom it may concern;-

Be it known that I, Renner R. SMITH, av citizen of the United States, residing at Philadelphia, inthe county of Philadelphia and State of Pennsylvania, have invented a new and useful Door-Check, of which the following is a specication. j This invention relates to door-checks or dedoors when partly open in any desired position, so as not 'to be blown shut by 'wind or closed by means of springs, with which they may be provided; and it has for its object to provide a device of this class which shall possess superior advantages in point of simplicity,durability,and general eiciency.

With these and other ends in view my inventin consists in the Improved construction, ar-

rangement, and combination of parts, which will be hereinafter fully described, and 'particularly pointed out in theclaims.

In the accompanying drawings, Figure 1 is a vertical sectional view showing a part of a door to which my invention has been applied, the view including the operating mechanism and part of the connecting means of the device. Fig. 2V is a yertical sectional view on the line 2 2 in Fig. 1. Fig. 3 is a sectional view taken on-the line 3 3 in Fig. 1.' Fig. 4 is a sectional view"'takeh through the lower I part cfa door equippedf with my improved mounted a lever 5,

check. Fig. 5 isa bottom view of the same. Fig. 6 is a detail view of the lower casing-'cylwhichmy invention has been applied. Fig.

8 is' a perspective view `of the two-part casing which forms the housing for the spring-actudoor-check. Fig.

of applying my improved device to a door. y Corresponding parts in the several figures are indicated by similar numerals of reference.A 1 designatesa casing provided with an'V edge ated bolt of my improved the edge of the door, where it is secured-,by means of screws 3, as will, be clearly seen in Fig. 1 of the drawings. 'he sides of this casing are connected by a pin 4,-,upon which is the inner freevend of which Athan the bore.

'which in practice -is mortised into is providedwith ahook 6,havinga rearwardlyextending lip 7 The sides of the casing 1 are also provided with openings 8. A shaft 10, preferably. square in cross-section, extends transversely through the openings 8 inthe sides thereof. This shaft carries a centrally-disposed cam 11, adapted to.

engage the lever 5. f The cam 11 is provided with trunnions 12, journaled in the openings 8 4of the casing, with a laterally-extending iinger 14 and with a downwardly-extending hook 15, the latter engaging a transverselydisposed pin l16, the function of which is to form a stop for the cam when the device is in operative position. `It will be obvious that by turning the cam inthe .direction indicated by an arrow in Fig. 1 said cam will bear against the under side of the lever, raising the latter to the position indicated in dotted lines. A reverse-movement will restore the cam and the lever to the position shown in full lines.

The casing containing the aforesaid elements is mortised into the door below the lock- 'casing, and the escutcheon 17 of the lock may be extended downwardly,

y or a separate escutcheon may be provided for the door-checking device. In either case the e'scutcheon is provided with an opening 8a for the passage of the shaft 10, said opening being preferably surrounded by a ange forming a boss 18, which receives and guidesthe inner ends o shaft 10 by means of set-screws 1 is open for The under edge ofthe easing the passage of the links 2,1, the upper one of 'which is supported by the hook 6 of the lever 5, a vertical bore 22 extending through the door from the lower edge of the casing to the lower edge of said door, where it terminates in a socket or recess l23 of greater diameter The socket or recess 23 is for the reception of a cylindrical casing 24, which is made v.of separate parts or sections provided at their lower rated for the reception of screws 26, by means of which the two-part cylinder is secured in the socket. Theinner end of an opening 27 for the passage of a rod 28, the lower end of `which terminates in a serewthis socket has the casing and through f 8o the handles 19, 'secured uponv the ends of the edges with anges 25, perfothreaded point 29, at the upper end of which is formed an annular flange 30 of such adiameter as to move freely within the cylinder-casing. The latter also contains a helical spring 31, which is interposed between the ange 30 and the upper part of the casing and which exerts pressure in a downward direction against the flange.

supports the connecting device formed by the l rods 28 and 35 and the links 2l and that a downward pressure is exerted upon the said connecting device by the spring 31.

36 designates a plug, which may be of wood or any other suitable material and which is capable of moving freely within the cylindrical casing 24, the upper end of said plug being connected with the rod 28 by the screwthreaded end 29 of said rod engaging the upper end of the plug which is secured in contact with the ange 30. The lower end of the plug 30 is annularly grooved, as at 37, and over it is fitted a cap 38, preferably made of rubber, which'forms the contacting face of the door-check.

It will be seen from the foregoing description that when theA handle 19 is turned to actuate the cam 11 in such a manner as to raise the lever 5 to the position shown in dotted lines in Fig. l the connecting devices composed by the links 21 and the rods 35 and 28 Will be actuated against the tension of the spring 31, so as toelevate the plug 36, having the cap 38, into the cylindrical casing 24, where the parts'will be supported by the hook 15 of the cam, which supp'orts the lever 5 in the raised position indicated. When it shall be desired to retain the door in an open or partly-open position, a single turn in the opposite direction of the handle 19 will bring the hook 5 of the cam into engagement with the stub 16, which acts as a stop, while, the lever 5 being relieved from the support of the cam, the spring 31 will force the plug 36, having the cap 38, in a downward direction and into engagement with the ioor, thereby securely holding the door in the partly or entirely open position to which it mayhave been adjusted. y I 1 In order to connect my improved device 0peratively with the door, the latter is first prepared for its reception by forming a mortise at the proper place for the reception of the casing 1 and next forming the bore 22 from the lower edge of the door in an upward di- .ticed that the uppermost link is somewhat longer than the remaining links. This is necessary only in order to provide for the proper engagement of the uppermost link with the lever 5, as will be presently described. The

rods 35 and 28 are connected by the screwthreaded connection aorded by the yoke 34,

which is made of suflicient length to engage a l considerable length of tl1`e`rod 28, which, however, is unscrewed as far as possible *without disconnecting it from the yoke. rlhe plug 36, which, with the cap 38, which is cemented or otherwise suitably secured thereto, constitutes the bolt, is connected with the lower end of the r0d 28, and these parts, together with the spring 31, may now easily be lassembled in the two-part cylinder, which latter is properly secured in the recess 23, provided for its reception. The rods and links are pushed upwardly through the bore 22 until the uppermost link may be'caught at the inner end of the mortise f provided for the reception of the casing 1. The links 22 will -enable the uppermost link to be brought out through the mortise, as shown in Fig. 9 of the drawings, when it may be readily connected with the hook 6 of the Alever 5, the casing 1 beingheld in close proximity to the edgeof the door in the meanwhile. The said casing is then inserted into the socket, /thus causing the bolt to be pressed outwardlyfrom the casing bythe spring 31. The said bolt is now by the use of the fingersor by some suitable tool turned from left to right, thus causing the screw-threaded portion 32 of the rod 28 to pass into the yoke 34 at the lower end of the rod 35 and enabling the desired adjustment to be made-that is, permitting the necessary portion of the bolt to protrude belovvr the lower edge of the door. This' adjustment, of course, may be readily ascertained, and it may be made more or less effective, according to the size and weight of the door to which the device isapplied. The shaft 10 of the handles is now adjusted in position, as well as the edge IOO IIO

plate of the casing 1, and the device is then in condition for operation.

From the foregoing d escrlption, taken in connection with the drawlngs-hereto annexed,

the operation and advantages of mycinvention l will' be readily understood. The evice is siinple and effective in use, and, as will be seen, provision has been made for its applica-k tion to doors of various dimensions in such a manner that an c ective adjustment may always be had. i I. v

I have in the foregoing described a simple and preferred construction of my invention;A

described my invention,` I

having a.vertical bore enlarged at its lower end and terminating in a mortise at its upper end, a casing in said mortise, a lever in said casing having a hooked end extending over' the bore, means for manipulating said lever to raise 'and support the inner end thereof, a downwardly-spring-actuated bolt in the enlarged lower end of the bore, and` connecting means between said bolt and the hooked end 'of the lever, said connecting means including two adjustably connected rods and a chain connecting the upper rod with the hooked end of the lever. A l

2. In a device of the class described, a door ,having a vertical bore enlarged at its lower end and terminating in amortise at its upper end, a casing v1n said, mortise, a lever in said casing 'having a hooked inner end extending Aover the bore, a two-part casing in the enlarged lower end. of said bore, adownwardlyspring-actuated bolt seated in said casing, a rod having screw-threaded connection with the upper end. of thebolt provided with a ange abutting upon the upper end .of said bolt, said rod extending upwardly into the bore, asecond rod having screw-threaded conneetion with the first or lower rod, and a chain connecting the upper *rod with the inner hooked end of the operating-lever.

3. In a device of the class described, adoor having a vertical bore enlarged at its lower end and .terminatingy in a mortise at its upper end, a two-partvertically-divided casing seated in the enlarged lower end of the bore, a downwardly-spring-actuated bolt movable in said casing and having an elastic cushion of a diameter not'exceeding that of the b'volt, and means for withdrawing said bolt and cushion.

`nular iiange,`a bolt into the casing against the tension of the spring and for retaining the same in such Withdrawn position.

4. In a device of the class described, a bolt consisting of a wooden cylinderhaving an annular groove, and a cap engaging said groove and thereby connected with the cylinder, said elastic cap being of an extreme diameter not exceeding the diameter of the bolt.

5.` In a device of the class described, the combination with a downwardly-spring-actuated bolt, of operating means comprising a hooked lever and a cam adapted to raise said lever and to sustain it in a raised position, and-connecting means including a rod connected with the bolt and having a screw-threaded upper end, a rod provided with a yoke having screw-threaded connection with the upper end oi' the lower rod, and a chain comprising a plurality of links, the lower one of which is connected with the upper connecting-rod and the upper oneof which is connected with the hooked end of the lever.

6. In a device of the class described, the combination with a connecting-rod` having a pointed screw-threaded lower end and an ancomprising a wooden plug having screw-threaded connection with said9 rod below the ange and provided with an annular flange, and an elastic capengaging said fiange "and of an extreme diameter not Aexceeding that of the wpoden plug constitut- .ing the bolt.

a lever mount- 7. In a door-checking device,

hooked ed ina suitable casing andhaving a inner end and a bolt adapted by said lever, in combination with connecting means including links adapted to be inserted into the mortise provided for the reception of the lever-carrying casing and to be drawn forwardly' through said mortise for engagement with the hooked end of the lever.

In testimony that my own I have hereto aiiixed my signature 1n the presence of two witnesses.

RoB'r. n. SMITH.

Witnesses:

Gr. GARKMAN, J`. H. WAGNER.

to be operated I claim the foregoing as 

